Car-brake-operating mechanism.



T. H. McCAULEY.

CAR BRAKE OPERATING MECHANISM.

APPLICATION nun FEB. 15.1911. RENEWED APR.30.19IB.

Patented Nov. 19, 1918.-

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CAR BRAKE OPERATING MECHANISM.

APPLICATION FILEU FEB. 15. 1911. RENEWED APR. 30. was,

1,285,2fi2. I Patented Nov. 19, 1918.

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CAR BRAKE OPERATING MECHANISM.

APPLICATION msu FB.I5, 1911. RENEWED APR. 30,. 191B.

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THOMAS HENRY MCCAULEY, F CALGARY, ALBERTA, CANADA.

CAR-BRAKE-OPERATIN G MECHANISM.

Specification of Letters Patent. Patented Nov. 19, 1918.

Application filed February 15, 1917, Serial No. 148,894. Renewed April30, 1918. Serial No. 231,748.

To all whom it may concern:

Be it known that I, THOMAS HENRY Mo- CAULEY, a subject of the King ofEngland, residing at Calgary, in the Province of Alberta and Dominion ofCanada, have invented a new and useful Car-Brake-Operating Mechanism, ofwhich the following is a specification.

The present invention appertains to car brakes. and relates moreparticularly to the operating devices thereof.

It is the object of the invention to provide a novel and improvedattachment for such devices, and operable for storing up energy or powerto operate said device and apply the brakes quickly and easily, thepresent mechanism also being of advantage for quickly applying thebrakes in case of emergency, and for conveniently restoring or resettingthe brakes.

view, which will appear as the, description proceeds, the inventionresides in the combination and arrangement of parts and in the detailsof construction hereinafter described and claimed, it being understoodthat changes in the precise embodiment of theinvention herein disclosed,can be made within the scope of what is claimed, without departing fromthe spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein:

Figure l is a perspective view of the invention as applied to a commonform of brake operating device.

Fig. 2 is a front view illustrating a variation as applied to adifierent form of brake operating device. 4

Fig. 3 is a side elevation of the mechanism shown in Fig. 2. portionsbeing broken away away and shown in section.

Fig. 4 is a perspective view of another modification as applied to astill different form of brake operating device.

Referring to Fig. 1, there is illustrated therein the upright brakeoperating staii or shaft 1 journaled through the floor or deck 2 of thecar, and through a suitable bracket 3 above the floor or deck, the usualhand wheel 4 being secured upon the upper end of the shaft 1. A chain orother flexible element 5 is connected to the lower terminal of the shaft1 to be wound thereon for applying the brakes in the ordinary manner.the

wheel 4 being rotated in the direction of the pawl or dog 7 for holdingthe shaft 1 and preventing the chain 5 from unwinding when the brakesare applied and by rotating the hand wheel at slightly in the directionof the arrow, the pawl 7 will be disengaged from the ratchet wheel 6,thereby enabling the shaft 1 to rotate for unwinding the chain andreleasing the brake. The foregoing de- V106 1s common and well known.

In carrying out the invention, a coiled torsional spring 8 surrounds theshaft 1 .and has its lower end secured, as at 9, to the shaft while theupper end of the spring is secured, as at 10, to the bracket3 or otherstationary member, this spring 8 being arranged to be wound up when thechain 5 is unwound. thereby storing energy in the spring for sub Withthe foregoing and other ob ects in sequently applying the brakes quicklyand effectively.

As a means for rotating the shaft 1, to release the brakes and wind upthespring 8, a drum 12 is secured upon the shaftl in any suitablemanner, preferably above the bracket 3, and has attached thereto a cord.cableor other flexible element 13 which is adapted to be wound thereonas the shaft 1 is rotated for winding up the chain 5. The cord 13 passesover a pulley wheel 14 carried by the bracket 3 and has its free endattached to a vertically movable slide 15, said slide having a sleeve 16guided for vertical movement upon a guide rod 17. Said guide rod isattached to the deck 2 and bracket 3, as illustrated, and the slide hasa foot piece 18 projecting laterally from the sleeve 16. It is evidentthat when the cord 13 is wound upon the drum .12, the slide 15 israised. and by depressing the slide by the foot. the cord will be pulleddownwardly, thereby unwinding it from the drum 12 and rotating the shaft1 to wind up the spring 8 and unwind the chain 5 so as to release andreset or restore the brakes.

A second dog or pawl 19 is mounted upon thedeck 2 adjacent to theratchet wheel 6 for locking the shaft 1 against rotation when the spring8 is wound up, the pawl 19 preventing the shaft 1 from rotating to applythe brakes under the influence of the spring, while the pawl 7 is forthe purpose of holding the shaft against rotation when the brakes areapplied. These pawls can be 2. The combination with a brake operatingdevice including a shaft for operating the brakes, of spring meansconnected to said shaft to be wound up when the shaft is rotated forreleasing the brakes, means for holding said shaft when the spring iswound up, a drum connected to said shaft, a depressible slide, and aflexible element connected to said slide and attached to and 10 woundupon said drum for rotating the shaft to release the brakes and wind upthe spring when said slide is depressed.

THOMAS HENRY MOCAULEY.

Witnesses:

GEO. W. CRAIG, JAB. I. FISH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

